PAUL HOLMGREN, PAUL G. .IARVIS and MARGARET S. JARVIS Department of Genetics and Plant Breeding, nepartnit'nt of Ptunt t^hysiotogy. Royal Agriculturat College of Sweden, Uppsala 7 and Institute of Physiotogicat Botany, University of Uppsala. Uppsala iHeceived t^t'tiruary 3. H)C5j I. Introduction Attention has recently been drawn to the wide range of maximum photosynthetic and net assimilalion ratt'S attained nt normal carhon dioxide con(â¢cntnUioEis by ditferent plant specie.s nnd, in particular, to the low rates of woody planis* (Hesketh 1903, Larcher 1903. Jarvis and Jarvis 1904). At lif^ht saturation and normal carbon dioxide concentrations, the rate of photosynthesis of many plants is limited by the rate oi" carbon dioxide supply (Gaastra 1959) and the suf,'gestion has been made that the low photosynthetic rates may depend on a high resistance to the transfer of carbon dioxide in sotution from the mesopbyll cell walls to the reaction sites in the chloroplasts, the mesophyll resistance of (iaastra. The main object of this stndy was to estimate Ihe relative significance of the mesophyll and minimum stomalal resistances to carbon dioxide transfer as factors Umiling carbon dioxide uptake in leaves of a number of species with a range of maximum photosynthelie rales. The species
Physiologia Plantarum – Wiley
Published: Jul 1, 1965
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